The Thermal Staircase: The Integrated Thermal Budget of the Complete Build

Design paper of the Complete Build (Time Machine Blueprints, master list item 110): the integrated thermal budget of the whole machine — plasma core, vessel wall, cryogenic bath, skin, background — with a wattage at every station, the closed-cycle helium cryogenic decision, and the derived bound on heat arriving at the cold stage, verified in the campaign Monte Carlo (SIMULATED, NOT MEASURED).